>>> rhyme = "An apple a day\nSends the doctor away\n"
>>> rhyme.splitlines()
['An apple a day', 'Sends the doctor away']
>>> rhyme.splitlines(True)
['An apple a day\n', 'Sends the doctor away\n']
Zum Vergleich:
>>> rhyme.split("\n")
['An apple a day', 'Sends the doctor away', '']
>>> rhyme.split()
['An', 'apple', 'a', 'day', 'Sends', 'the', 'doctor', 'away']